Texas Vascular Plant Checklist:  Haloragaceae
The Water Milfoil Family
(Magnoliophyta, Magnoliopsida, Rosidae)

 Myriophyllum
   aquaticum (Vell.) Verdc. (brazilian parrot's feather, water feather, chile parrot's feather)
   heterophyllum Michx. (changeleaf parrot's feather)
   hippuroides Nutt. ex Torr. & Gray (western water milfoil)
   pinnatum (Walt.) B.S.P. (green parrot's feather)
   spicatum L. (eurasian water milfoil)
   verticillatum L. (whorled water milfoil)

 Proserpinaca
   palustris var. amblyogona Fernald
   palustris var. crebra Fernald & Grisc. (marsh mermaid weed)
   palustris var. palustris
   pectinata Lam. (combleaf mermaid weed)